21. (1) An object I cm high is placed in front of a concave mirror of focal
length 4 cm. Find by geometrical construction the position, the size and
the nature of the image
(ii) The object is now placed cm in front of the mirror. Find by
construction the position, size and nature of the image
Ans. (i) 20 cm, 4 cm (1) 12 cm. 4 cm)
Plz answer
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Answer:
The answer is 12
Explanation:
MARK AS BRAINLIEST
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